By-product Conversion To Feed Patents (Class 585/905)
  • Patent number: 8785704
    Abstract: The present invention relates to a process for nonoxidatively dehydroaromatizing a reactant stream comprising C1-C4-aliphatics by converting the reactant stream in the presence of a catalyst in a reaction zone 1 to a product stream P comprising aromatic hydrocarbons, and regenerating the catalyst whose activity has been reduced by deposited coke with a hydrogen-comprising mixture H in a reaction zone 2, wherein at least a portion of the deposited coke is converted to methane and at least a portion of the methane formed is fed to reaction zone 1.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: July 22, 2014
    Assignee: BASF SE
    Inventors: Frank Kiesslich, Achim Gritsch, Christian Schneider, Albena Kostova
  • Patent number: 8440873
    Abstract: Process for producing mono-olefins(s) from a feedstock A containing ethanol and propanol, wherein ethanol and propanol are dehydrated into the corresponding same carbon number olefins. The process is performed by 1. reacting feedstock A in a vapor phase dehydration reactor wherein the ethanol and propanol alcohols are converted into a product stream B comprising ethylene, propylene, ethers, water and unconverted alcohols, 2. cooling the product stream B, 3. disengaging the cooled product stream B in a separation unit to give a first stream C containing ethylene, propylene and ethers, and a second product stream D containing water, ethers and unconverted alcohols, 4. feeding the product stream D to a dewatering column wherein the water stream F is separated from the ethers and unconverted alcohols stream E, 5. recycling the stream E into the dehydration reactor of step 1, and 6. cooling the product stream C.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: May 14, 2013
    Assignee: BP Chemicals Limited
    Inventors: Craig Bailey, Leslie William Bolton, Benjamin Patrick Gracey, Michael Keith Lee, Stephen Roy Partington
  • Patent number: 8426664
    Abstract: Process for producing ethylene from an ethanol feedstock A by (1) reacting the ethanol feedstock A in a vapor phase reactor wherein the ethanol is converted at a temperature between 160 and 270° C. and at a pressure of above 0.1 MPa but less than 4.5 MPa, into a product stream B containing ethylene, diethyl ethers, water and unconverted ethanol, (2) cooling the product stream B, (3) disengaging the cooled product stream B in a separation unit to give a first stream C containing ethylene and diethyl ethers, and a second product stream D containing water, diethyl ethers and unconverted ethanol, (4) feeding the product stream D to a dewatering unit wherein the water stream F is separated from the diethyl ethers and unconverted ethanol stream E, (5) recycling the stream E into the dehydration reactor of step 1, (6) cooling the product stream C, and (7) feeding the cooled product stream C to a purification unit wherein the diethyl ethers stream G is separated from the ethylene stream H.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: April 23, 2013
    Assignee: BP Chemicals Limited
    Inventors: Craig Bailey, Leslie William Bolton, Benjamin Patrick Gracey, Michael Keith Lee, Stephen Roy Partington
  • Patent number: 6482999
    Abstract: A method for converting oxygenates to light olefins.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: November 19, 2002
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Shun C. Fung, James R. Lattner, Stephen N. Vaughn, Richard B. Hall, Hsiang-Ning Sun, Ron G. Searle, Luc R. M. Martens
  • Patent number: 6093865
    Abstract: The present invention relates to a method for using a single distillation column to recover the reactants and products from the reaction of a cyclic diolefin and an olefin to produce an alkenyl bridged ring compound.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: July 25, 2000
    Assignee: Exxon Chemical Patent Inc.
    Inventors: James R. Lattner, Leonel E. Sanchez, Christopher L. Becker, Bruce C. Devoy
  • Patent number: 5868922
    Abstract: A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone with minimal use of stripping gas, a sample of spent catalyst is removed prior to entering the regenerator. The spent catalyst is analyzed for strippable hydrocarbon by conducting the sample to a heated catalyst collection vessel, evacuating the catalyst, collecting the gases from the collection vessel and analyzing the gases for amount of strippable hydrocarbon on the spent catalyst.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: February 9, 1999
    Assignee: Exxon Research and Engineering Company
    Inventors: James P. Glass, Jr., George A. Swan
  • Patent number: 5863417
    Abstract: A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone, a sample of spent catalyst is removed prior to entering the regenerator. The spent catalyst is analyzed for strippable hydrocarbon by conducting the sample to a heated catalyst collection vessel, stripping hydrocarbon from the catalyst using an inert stripping gas, oxidizing the gasses from the collection vessel to carbon dioxide and water, and measuring the amount of carbon dioxide and/or water which amount of carbon dioxide and/or water can be correlated to the amount of strippable hydrocarbon on the catalyst sample.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: January 26, 1999
    Assignee: Exxon Research and Engineering Company
    Inventors: Richard A. Demmin, James P. Glass, Jr.
  • Patent number: 5569804
    Abstract: The present invention relates to a method for using a single distillation column to recover the reactants and products from the reaction of a cyclic diolefin and an olefin to produce an alkenyl bridged ring compound.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: October 29, 1996
    Assignee: Exxon Chemical Patents Inc (ECPI)
    Inventors: James R. Lattner, Leonel E. Sanchez
  • Patent number: 5276235
    Abstract: In the co-production of propylene oxide and styrene monomer, there is produced a sodium-containing heavy residue stream previously suitable only as a low grade fuel. In accordance with the invention, the heavy residue stream is contacted with acid having a molar concentration with respect to water above that which corresponds to the product salt solubility limit, and the resulting mixture is phase separated into an aqueous sodium salt-containing slurry phase and an organic phase reduced in sodium.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: January 4, 1994
    Assignee: ARCO Chemical Technology, L.P.
    Inventor: Walter S. Dubner
  • Patent number: 5210354
    Abstract: In the co-production oxide and styrene monomer, there is produced a sodium-containing heavy residue stream previously suitable only as a low grade fuel. In accordance with the invention, the heavy residue stream is contacted with aqueous acid, and the resulting mixture is phase separated into an aqueous sodium-containing phase and an organic phase reduced in sodium, and at least a portion of the organic phase reduced in sodium is converted to styrene monomer.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: May 11, 1993
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Walter S. Dubner, Robert N. Cochran
  • Patent number: 4801762
    Abstract: In an improved method for converting methane to at least one higher hydrocarbon product and coproduct water which comprises contacting a gas comprising methane and at least one added gaseous oxidant with nonacidic solid, the improvement comprising conducting at least a portion of said contacting in the presence of added water.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: January 31, 1989
    Assignee: Atlantic Richfield Company
    Inventor: David W. Leyshon
  • Patent number: 4788372
    Abstract: In a method for converting methane into higher hydrocarbon products and coproduct water which comprises contacting a gas comprising methane and a contact solid comprising at least one reducible metal oxide in the substantial absence of added gaseous oxidant, the improvement comprising conducting at least a portion of the contacting in the presence of added water.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: November 29, 1988
    Assignee: Atlantic Richfield Company
    Inventor: Anne M. Gaffney
  • Patent number: 4211886
    Abstract: Benzene, toluene and xylene are produced in high yield from aromatic naphtha by a processing technique which combines (1) high temperature isomerization of eight carbon atom aromatics over a catalyst having relatively low activity and constrained access to the internal pore surface and (2) processing of heavy single ring aromatics of nine or more carbon atoms together with toluene under dealkylation/transalkylation conditions. The effluents of the two reactions are blended for processing through separation and recovery equipment. The unique chemistry of the isomerization stage results in splitting off alkyl side chains of two or more carbon atoms while retaining methyl groups attached to aromatic rings. Because of these reaction characteristics, full range reformate is advantageously added to the isomerizer charge for conversion to methyl benzene and redistribution of methyl groups to the thermodynamic equilibrium values.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: July 8, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Samuel A. Tabak, Roger A. Morrison
  • Patent number: 4166077
    Abstract: Ethane is produced from alkanes by introducing a mixture of hydrogen and alkanes into a reactor at a spatial velocity V and a total pressure P on a catalyst at the temperature T. The catalyst is constituted by at least one metal selected from iridium and rhodium incorporated in a support of inert refractory oxide in which SO.sub.4.sup.-- sulphate ions are not present.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: August 28, 1979
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Jean-Rene Bernard, Pierre Turlier, Jacques Bousquet
  • Patent number: RE35632
    Abstract: In an improved method for converting methane to at least one higher hydrocarbon product and coproduct water which comprises contacting a gas comprising methane and at least one added gaseous oxidant with nonacidic solid, the improvement comprising conducting at least a portion of said contacting in the presence of added water.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: October 14, 1997
    Assignees: Atlantic Richfield Company, Phillips Petroleum Company
    Inventor: David W. Leyshon
  • Patent number: RE35633
    Abstract: In an improved method for converting methane to at least one higher hydrocarbon product and coproduct water which comprises contacting a gas comprising methane and at least one added gaseous oxidant with nonacidic solid, the improvement comprising conducting at least a portion of said contacting in the presence of added water.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: October 14, 1997
    Assignee: Atlantic Richfield Company
    Inventor: David W. Leyshon